Everything works fine, the only thing I changed is that I don't create the container over Ext.create but over an xtype.

I noticed similar behavior a couple of times while messing with sencha touch, but after messing with this for at least 3-4 hours I really want to know why it didn't work with Ext.create?
Most likely I'm missing some general knowledge I can't find on google, maybe somebody is so kind to enlighten me?